I took delivery on Jason Bourne 4K taking advantage of the Amazon price break. We decided to watch the entire series from the beginning so I searched for my copies of the first 3 movies and discovered they were in HD-DVD. really brought back bad memories as to how bad that format was with playback stability. I have two HD DVD players, a Toshiba and the XBOX360 HDDVD player. The XBOX was more stable but still would skip frames and freeze up about 2/3 into the movie. Really had to suffer with frequent XBOX hard resets to get through them. So finally got to the recent 4K disk and really enjoyed it last evening.
The only complaint is I hope we don't have to wait another 10 years for episode 5.
The image quality was superb and sound awesome. Of course aside from the stability issues the HDDVD copies were really nice video quality in the upconversion to 4K too. Can't complain.